1. Highly radiosensitive cells areBuccal mucosaRetinaLungLiverQuestion 1 of 20 2. Oral route is used for which isotopeGalium 67Tech 99F-18Iodine-123Question 2 of 20 3. After radiation therapy , child develop rampant caries,this is calledRampant cariesEarly childhood cariesSecondary cariesRadiation cariesQuestion 3 of 20 4. radiographic diagnosis of dense radioopaque cotton wool areas throughout the entire body of the mandible and associated with hypercementosis is most likelyosteomyelitispaget's diseaseexostosisenostosisQuestion 4 of 20 5. a patient with a history of radiation therapy requires special consideration becausethe potential for periodontal disease is greatly increasedpla accumulation greater than normal can be expectedsalivary function may be increasedthe vascularity of bone may be disruptedQuestion 5 of 20 6. occlusal radiograph are useful in locatingmaxillary sinus mucocelesthe mental foramensialoliths in whartons ductsialoliths in stensons ductQuestion 6 of 20 7. Most radiosensitive phase of cell cycle isSG1G2S2Question 7 of 20 8. Mc gregor and trapnell lines are seen on awater's viewSMVPA view skulltrue lateral viewQuestion 8 of 20 9. MRI sequence used to assess soft tissue pathology inT2 WProton densityEither T1 or T2T1 WQuestion 9 of 20 10. Mandible in single plane is seen inAP viewOPGLateral obliqueque PA viewQuestion 10 of 20 11. If an exposed radiograph is too dark after proper development, you should ____.Decrease development timePlace it back in the fixerPlace it back in the developerDecrease exposure timeQuestion 11 of 20 12. The unit for measuring the absorption of x-rays is called:RADRoentgenREMQFQuestion 12 of 20 13. Which of the following doesnot apply to filtration of an x-ray beam in a modern x-ray unit?Required to be 1.5 mm thick for 70 kVpDecreases the mean energy of the x-ray beamProvided by an aluminum filterReduces patient exposure by removing lower energy photonsQuestion 13 of 20 14. In case of suspected metastasis to lymph nodes of neck,ultrasound will reveal all of the following exceptHypoechoic shadowLoss of fatty hyaline layerPresence of microcalcificationsDecreased vascularityQuestion 14 of 20 15. all of the following radioisotopes are used in systemic radionucleotide exceptiridium-192samarium-153strontium-89phosphorus-32Question 15 of 20 16. It is important that the film base be ____.opaque FlexibleCompletely clearsensitive to XrayQuestion 16 of 20 17. Chromosomal damage maximum during radiotherapy when there is damage toAutosomeSex chromosomeCentrosomeTelomereQuestion 17 of 20 18. which is the best technique for detecting proximal caries in children with minimum radiation exposurebitewing with paralleling technique panoramic radiographybitewing with bisecting angle technique bitewing with RVGQuestion 18 of 20 19. Lamina dura, Nasal fossa and maxillary sinus appear distinct and clear in a radiograph due toPhotoelectric effectEgg shell effectWindow effectMach band effectQuestion 19 of 20 20. which one of the following is used to show base of skull,sphenoid sinus,position and orientation of the condyles and fractures of zygomatic archreverse towni projectionthe TMJ surgerythe facial profile surgerysubmentovertex projectionQuestion 20 of 20 Loading...